/*******************************************************************
		   Your tree Support Routines
********************************************************************
    Author: 
      Date: 
  Comments: This is the template file for Program Assignment 2.
            You should put your functions in this file. Multiple
            files are OK, if you feel that is more appropriate.
********************************************************************/

#include <stdlib.h>
#include <math.h>
#include <GL/glut.h>
#include "const.h"
#include "types.h"
#include "funcs.h"

/* replace the following function with your own, that will draw a Tree */
/* Use of the display list object is recommended */

void drawTree(treeType *tree)
{
  static GLint cylinder;
  
  if(tree==0)
    return;
  
  if(cylinder==0)     /* obtain an OpenGL display list ID */
    cylinder = glGenLists(1);
  
  /* create a display list object for a cylinder */
  glNewList(cylinder,GL_COMPILE);
  /* approximate cylinder's circle with 24 segments */
  solidCylinder(tree->x,tree->y,tree->z,tree->base_radius, tree->base_length, 24);
  glEndList();

  /* call the cylinder */
  glMatrixMode(GL_MODELVIEW);
  glPushMatrix();
  glCallList(cylinder);
  glPopMatrix();
}